Angle detector

Aiming at defects of the traditional angle detecting tools, the utility model provides an angle detector composed of a magnet, a circular level vial, angle scales and a matrix, wherein the top of the matrix is provided with the circular level vial; one vertical surface of the matrix is provided with the magnet, and the rest three vertical surfaces of the matrix are respectively provided with one of the angle scales; the outer surface side of the magnet is provided with a crossed groove, and the section of the crossed groove is shaped like a circular arc. The angle detector not only can be used for detecting a linear structural member, but also can be used for conveniently detecting a face type structural member and an arc-shaped structural member and is wide in application range, low in cost, easy to carry, convenient to mount, convenient and rapid in operation, intuitive and accurate in data and capable of realizing multi-point detection and effectively overcoming defects of the traditional angle detecting t